Hammer crusher



Sept. 22, 1931. c. A. JAMISON HAMMER CRUSHER Filed Aug. 28, 1928mvzrrrom CharlesAJamlson,

Patented Sept. 22, 1931 J UN1- reo;S ATES PATENT OFFICE CHARLES A.JAMIsoN, or PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO PENNSYL- VANIACRUSHER. COMPANY, or PHILADELIHIA, PENNSYLVANIA, A CORPORATION OFv NEWYORK HAMMER CRUSHER Application filed August 28, 1928. SerialNo.'302,562.

My invention relates to hammer crushers of'the type substantially as setforthin my pending application for patent for improvements in hammermills, filed August 25, 1928, Serial 'No. 302,108, wherein ahammer-carrying structure is shown as rotatably mounted withrespect to acage or screen, and the principal obj ect'ofmy' present invention'is topro vide supporting and adjusting mechanism for one end of the cage orscreen forming the lower part of the crushing chamber that may be keptclea'rof the material being crushed and avoid fouling and 'blinding'ofthe links ofthe chain.

My invention has been applied to hammer crushers of the type in whichthe cage or screenis pivotally supporte'd a-t one end by a relativelyfixed shaft journaled in the frame or base of thecrushing structure, andhung at its opposite en-d from chains passing over sprocket. wheels 1mounted on a shaft'which maybe journaled in the walls of the frame orcasing and which may be operable by a hand wheel, either directlyor-through atrain offgearing, to raise'or lower the end of the cage.Suchmechanism may be so arranged that motionimparted to saidshaft willeffect movement of the chains in either direction, as the case may be,to adjust the cage or screen relatively to the'path of the hammers asconditions of crushing or'wearupon the hammers may requirei These andother features of my invention are more. fully described "hereinafter;reference being had' to the accompanying drawings, in which: I

Figure'l is aside elevation, partly'in'section, of cage-adjustingmechanism arranged in accordance with myinvention, and 40 Fig. 2 is'an'endelevation, partly in section on the line IIII, Fig. 1;

My inventioniis shown as applied to a 'crushe1".oftl1e type set forth'inmy pending application noted above, .and theco-pen'dmg application ofGeorge WQ Berton, 'filed August 25, 1928, Serial No. 302,080, whereinthe S de walls or frames. ofthe structure are carried well'ab'ove the axs of the hammer-carry- 111g rotor; .the shaftfcarrying the sprocketwheels over which the'chains supporting the m'ent to the end of thescreen.

cage or screen pass, being journaled in the side walls of this portionof the frame.

The frame of the crusher may be made up of side members 1, withcross-connecting members 2 and 3, at the respective ends of the same. Acage or screen which may comprise side members 4, hung from a shaft 5disposed at one end of the crusher structure, and provided with theusual spaced cross-bars indicated at 6, is disposed in the lower portionof the crusher structure and is adjustable with respect to the path ofthe rotary beaters or hammers carried by a rotor structure mounted inthe crushing chamber above said cage onscreen. This rotor structure, ofa type usually employed with crushers of this character, may comprise ahammer-carrying part of the crusher is adjusted on its pivotal support5-with respect to the path of the hammers 18, for various crushingconditions or to compensate for wear of the hammers, and in the presentinstance I have shown adjusting means in the form of chains 14, whichmay be secured to shackle members 15, connected to a cross-bar or shaft16 connectingthe ends ofthe side members 10f the screen such chainspassing over sprocket wheels 17, carried by a shaft 18, which may beoperatively connected to a hand wheel 19, either directly or indirectly,whereby motion may beimparted to said shaft to raise or lower the chainsand impart similar move- Similar adjusting means for the cages orscreens of hammer crushers have heretofore been employed, but thechainsand chain wheels have usually been arranged directly adjacent theend of the-cage or screen where they are and endplates to which calflanges forming spaces for the reception subject to fouling by wet orsticky material which, collecting in the links of the chain, blinds thesame and prevents their proper engagement wi.h the sprocket wheels.

In carrying out my invention, the shaft 18, carrying the sprocket wheels17, is theposed some distance above the end of the cage or screen andout of the way of the material passing through the crushing structure;such shaft being arranged in a recess 3 in the cross-member 3. Asillustrated in Fig. 2, the chains 14 are brought up through openings 20in the side flanges of the upper portions of the frame and are disposedon the outside ofsuch frame between vertical flanges 1 of the same; sucharrangement disposing the sprocket wheels 17 and the greater portion ofthe chains 18, wholly outside the crushing chamber. In order thatcomplete protection may be afforded such chains and chain wheels, Ipreferably provide cover plates or housings of light sheet metal,indicated at 21, which may be secured to the side frames by screws 21 orin any other suitable manner.

Machines of this type are usually provided with a tramp iron pocket, andsuch recess is indicated at 22, and may be formed in the cross-member 3;a swinging cover plate, such as indicated at 22, being usually providedforthe same. In the present instance this pocket is arranged entirelyindependently of the screen, in the cross-member 3 and below the shaft18 carrying the sprocket wheels 17,

so that discharge of any material foreign or otherwise into and fromsuch pocket can not aflect such shaft or the sprocket wheels, or thechains 1 f passing over the latter and supporting the cage or screen.

My invention provides simple and eflicient means for keeping theadjusting chains in clean and operative condition at all times.

I claim: 7

1. In a hammer crusher, the combination with a casing having a crushingchamber with vertical side walls, a hammerecarrying rotor structuredisposed within the same, a cage forming the bottom of said crushingchamber and cooperating with said hammers and a pivotal support normallyoccupying a fixed position for one end of the cage while the oppositeend of said cage is susceptible to raising and lowering movements toadjust the surface of the same relatively to the path of the hammers, ofsupporting chains passing outside the side walls of the casing andconnected to said movable end of the cage, sprocket wheels over whichsaid chains pass 7 also disposed outside the side walls of the casing;said side walls having external vertiof the sprocket wheels and theupper portion of the chains which pass over the same and horizontalflanges slotted for the passage of said chains, and a manually operableshaft j ournaled in said side walls and carrying said sprocket wheels.

2. In a hammer crusher, the combination with a casing having a crushingchamber with vertical side walls, a hammer-carrying rotor structuredisposed within the same, a cage forming the bottom of said crushingchamber and cooperating with said hammers and a pivotal support normallyoccupying a fixed position for one end of the cage while the oppositeend of said cage is susceptible to raising and lowering movements toadjust the surface of the same relatively to the path of the hammers, ofsupporting chains passing outside the side walls of the casing andconnected to said movable end of the cage, sprocket wheels over whichsaidchains pass also disposed outside the upper part of the walls of theframe the side walls of the frame having external vertical flangesforming spaces for the reception of the sprocket wheels and the upperportion of the chains which pass over the same and horizontal flangesslotted for the passage of said chains to connections with the cage, amanually operable shaftjournaled in said side walls and carrying saidsprocket wheels, and housings for the sprocket wheels and those portionsof the chains disposed externallyofthe side walls of the casing- 3. In ahammer crushelgthe combination witha casing having a crushing chamberwith vertical side walls, a hammer-carrying rotorstructure dis osedwithin the same, a cageforming the ottom of said crushing chamber andcooperating with said hammers,

and a pivotal support normally occupying a fixed position for one end ofthe cage while the opposite end of said cage is susceptible,

to raising and lowering movements to adjust the surface of the samerelatively to the path of the hammers, of supporting chains passingoutside the side walls of the casing and connected to said movable endof the cage, sprocket wheels over which said chains pass also disposedoutside the upperipart of the walls of'the frame; said walls havingflanges forming spaces for the reception of the sprocket wheels and theupper portions of the chains which pass over the same and portions ofsaid side walls being slotted for the passage of said chains,connections between one end of said chains and one end of the cage orscreen, and means for imparting movement to said chains. 1

,4. In a hammer crusher, the combination with a casing having a crushingchamber with vertical side walls, a hammer-carrying rotor a, structuredisposed within the same, a cage 7 formlng the bottom of said crushingchamber and cooperating with said hammers and a pivotal support normallyoccupying'a fixed position for one end ofthe'cage while the op positeend of said cage is susceptible to raising and lowering movements toadjust the surface of the same relatively to-the path of the hammers, ofsupporting chains passing outside the side walls of the casing andconnected to said movable end of the cage, sprocket wheels over whichsaid chains pass also disposed outside the upper part of the walls oftheirame; said walls having flanges forming spaces for the reception ofthe sprocket wheels and the upper portions of the chains which pass overthe same and slotted flanges for the passage of said chains to the cageconnections; a manually operable shaft journaled in said side walls andcarrying said sprocket wheels, a cross member forming one end of thecrusher structure and having a tramp iron pocket and a recess above saidpocket; the end of the cage supported by said chains being disposedbelow said tramp iron pocket, and the shaft supporting said sprocketWheels being disposed in the recess of the cross member above said trampiron pocket.

In witness whereof I have signed this specification.

CHARLES A. J AMISON.

